Author Isaac Asimov was a professor of biochemistry at Boston University, and apart from writing sci-fi he also published science books. In one he speculated that the biblical Flood was caused by a huge meteorite splashing down in the Indian Ocean, sending a tsunami up the Tigris/Euphrates valleys that washed Noah's Ark up to Turkey..
And a TV docu a few years ago examined the 10 Plagues of Egypt and concluded that they may well have really happened, but that they were caused by freakish weather conditions etc.
Christians countered by saying "Ah but God himself controlled the weather"..